hd44780-spin

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This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for the HD44780 LCD

IMPORTANT: This software is meant to be used with the spin-standard-library (P8X32A) or p2-spin-standard-library (P2X8C4M64P). Please install the applicable library first before attempting to use this code, otherwise you will be missing several files required to build the project.

Salient Features

• I2C connection at ~30kHz (P1: SPIN I2C), 100kHz (P1: PASM I2C, P2)
• Backlight control
• Set cursor visibility mode (block/underscore/blinking/no blinking)
• Set display visibility mode (independent of display RAM contents)
• Set cursor position
• Enable/disable processing of control chars at runtime
• Support for alternate I2C addresses

Requirements

P1/SPIN1:

• spin-standard-library
• PCF8574 driver (provided by the spin-standard-library)
• For I2C-connected displays: 1 extra core/cog for the PASM PCF8574 driver (none if using the bytecode-based driver)
• terminal.common.spinh (provided by the spin-standard-library)

P2/SPIN2:

• p2-spin-standard-library
• PCF8574 driver (provided by the p2-spin-standard-library)
• terminal.common.spin2h (provided by the p2-spin-standard-library)

Compiler Compatibility

Processor	Language	Compiler	Backend	Status
P1	SPIN1	FlexSpin (6.8.0)	Bytecode	OK
P1	SPIN1	FlexSpin (6.8.0)	Native/PASM	OK
P2	SPIN2	FlexSpin (6.8.0)	NuCode	OK
P2	SPIN2	FlexSpin (6.8.0)	Native/PASM2	OK

(other versions or toolchains not listed are not supported, and may or may not work)

Limitations

• Very early in development - may malfunction, or outright fail to build